Small Size: Normally Can fit 13"-16" tire(Sedan Car), but it depend on the tire diameter, can fit the max diameter 66cm

Big Size: Normally Can fit 16"-19" tire (SUV), but it depend on the tire diameter

can fit the diameter 66-80cm.

How to choose the size:

Pls see the below photo, such as tire 215/55/R15, as calculate the diameter is 61.75cm, then it need to choose small size.

Such as your tire is 245/55/R17, then it's 24.5*0.55*2+17*2.54=70.13(cm), then it need to choose big size.

PS: if you still make sure which size do you need, pls contact with us and tell us your specific tire size(like 215/55/R16), then we will calculate the diameter and let you know which size do you choose, thank you.